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Any beach goddess knows that sunscreen is a must when you're spending a ton of time outside. After all, you want to dodge sunburns that could lead to skin cancer -- or a bright red color that contrasts with your outfit. Neutrogena Ultra Sheer Dry-Touch Sunblock is one way to avoid the harmful affects of the sun without giving in to greasy lotions and icky feelings. If you use it after it's expiration, though, it's less effective, so check the date before you smooth it over your skin.
Search for the expiration date on the bottle. Neutrogena prints an expiration date on its Ultra Sheer Dry-Touch Sunblock, no matter what SPF you're going for. It should be on the back of the bottle.
Call Neutrogena at 888-984-2464. Make sure you have your bottle with you, so they can access information about the batch you're looking into. After all, there's a ton of sunscreen sold every year, so you have to help a rep out to get help.
Remember when you bought it and throw it out if three years have passed. Sunscreen isn't as effective after three years, so its a good idea to toss it once you've been applying it for three swimsuit seasons.